{% for msg in ctx.history %}
{
  "role": {{ tojson(msg.role) }},
  "content": [
    {% for b in msg.content_blocks %}
      {% if b.type == "image" %}{% include "partials/anthropic_image.jinja" %}
      {% else %}{{ tojson(b) }},
      {% endif %}
    {% endfor %}
  ]
},
{% endfor %}